The Yuma Basin, located in the northeastern part of the planning area is 792 square miles in area. Geographic features and principal communities are shown on Figure 7.11-1. The basin is characterized by desert valleys and mountain ranges. Vegetation type is Lower Colorado River Valley Sonoran desertscrub. (See Figure 7.0-9)
Principal geographic features shown on Figure 7.11-1 are:
- The Colorado River on the western basin boundary
- Yuma Desert in the southern portion of the basin
- Tinajas Altas Mountains and the Gila Mountains on the eastern basin boundary with the highest point in the basin at 2,694 feet.
- The lowest point in the basin at 70 feet where the Colorado River enters Mexico at the southern international boundary.
Figure 7.11-1 Yuma Basin Geographic Features